Ubuntu 3827-2: Samba vulnerabilities

    Date27 Nov 2018
    CategoryUbuntu
    2108
    Posted ByAnthony Pell
    Several security issues were fixed in Samba.
    ==========================================================================
    Ubuntu Security Notice USN-3827-2
    November 27, 2018
    
    samba vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in Samba.
    
    Software Description:
    - samba: SMB/CIFS file, print, and login server for Unix
    
    Details:
    
    USN-3827-1 fixed a vulnerability in samba. This update provides
    the corresponding update for Ubuntu 12.04 ESM.
    
    
    Original advisory details:
    
     Florian Stuelpner discovered that Samba incorrectly handled CNAME
     records. A remote attacker could use this issue to cause Samba to
     crash, resulting in a denial of service. (CVE-2018-14629)
    
     Alex MacCuish discovered that Samba incorrectly handled memory when
     configured to accept smart-card authentication. A remote attacker
     could possibly use this issue to cause Samba to crash, resulting in a
     denial of service. (CVE-2018-16841)
    
     Garming Sam discovered that Samba incorrectly handled memory when
     processing LDAP searches. A remote attacker could possibly use this
     issue to cause Samba to crash, resulting in a denial of service. 
     (CVE-2018-16851)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 ESM:
      samba                           2:3.6.25-0ubuntu0.12.04.16
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3827-2
      https://usn.ubuntu.com/usn/usn-3827-1
      CVE-2018-14629, CVE-2018-16841, CVE-2018-16851
    
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